Ultrastructural Evidence for the Presence of Bacteria, Viral‐like Particles, and Mycoplasma‐like Organisms Associated with Giardia spp.

DENNIS E. FEELY, DAVID G. CHASE, E. LEE HARDIN, STANLEY L. ERLANDSEN

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

ABSTRACT. Giardia trophozoites and cysts, isolated from mammalian and avian hosts, were examined by transmission electron microscopy (TEM), scanning electron microscopy (SEM), and by fluorescent light microscopy for the presence of microbial symbionts. Mycoplasma‐like organisms were observed on the surfaces of trophozoites isolated from the prairie vole, laboratory rat, and beaver. Intracellular bacteria were observed by TEM in the trophozoites and cysts of G. microti and by fluorescence microscopy in trophozoites and cysts of Giardia spp. isolated from beaver, muskrat, great‐blue heron, and the green heron. Trophozoites of G. muris from rat small intestine contained viral‐like particles measuring 60 nm in diameter. These observations suggest that biological associations between Giardia spp. and diverse microbes may be more common than formerly appreciated. It also raises the possibility of transmission of these apparent symbionts, via the Giardia cyst, to other mammalian hosts including man.

Original languageEnglish (US)
Pages (from-to)151-158
Number of pages8
JournalThe Journal of protozoology
Volume35
Issue number1
DOIs
StatePublished - Feb 1988

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Giardia
Trophozoites
Arvicolinae
Cysts
Bacteria
Transmission Electron Microscopy
Rodentia
Fluorescence Microscopy
Electron Scanning Microscopy
Small Intestine
Microscopy
Light

ASJC Scopus subject areas

  • Parasitology

Cite this

Ultrastructural Evidence for the Presence of Bacteria, Viral‐like Particles, and Mycoplasma‐like Organisms Associated with Giardia spp. / FEELY, DENNIS E.; CHASE, DAVID G.; HARDIN, E. LEE; ERLANDSEN, STANLEY L.

In: The Journal of protozoology, Vol. 35, No. 1, 02.1988, p. 151-158.

Research output: Contribution to journalArticle

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